Some hours of the day are better for some tasks than other. Research suggests, for example, that you should schedule medical appointments early in the day. With that sort of research in mind, lifestyle site Real Simple rounds up the best time of day to do just about anything.

Early appointments usually mean less waiting, and you're able to just get on with your day…
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Doing your cardio workout between 5 pm and 6 pm (or late afternoon to early evening), for example, may help you get more out of your exercise and sleep better too. Also:

At these times, [Dr. Matthew Edlund] says, your lungs use oxygen more efficiently, you're more coordinated, and your muscles are warmed up, so you're less likely to suffer a sprain or strain.

The post also recommends cleaning in the afternoon (around 4 pm) for the same reason, but also because if dusting tends to make you sneeze, you'll avoid the times in the morning when allergy symptoms are more severe and asthma attacks more likely.

One more tip: To improve your memory/learning, read in the evening (e.g., 10 pm). That's due to just the way our brains are organized for long retention.

Almost a dozen more tips, from when to nap to when to ask for a raise, are in the slideshow linked below.